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I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or even that the Sun is a star. - Carl Sagan I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or even that the Sun is a star. - Carl Sagan I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or even that the Sun is a star. - Carl Sagan